MarkDown

using ExcelDna.Integration;//  版本1.1.1
namespace XllTest
{
    public class Class1
    {
        [ExcelFunction(Description = "add two double",
            Category = "xll with adddouble function")]
        public static double Ix_Xiangxing([ExcelArgument(Description ="第一个数")]double firstNum,
            [ExcelArgument(Description = "第二个数")] double secondNum=0)
        {
        return firstNum + secondNum;
        }
    }
}